span.cc 1.1 KB

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  1. // Copyright 2020 The Chromium Authors. All rights reserved.
  2. // Use of this source code is governed by a BSD-style license that can be
  3. // found in the LICENSE file.
  4. #include "span.h"
  5. #include <algorithm>
  6. namespace crdtp {
  7. bool SpanLessThan(span<uint8_t> x, span<uint8_t> y) noexcept {
  8. auto min_size = std::min(x.size(), y.size());
  9. const int r = min_size == 0 ? 0 : memcmp(x.data(), y.data(), min_size);
  10. return (r < 0) || (r == 0 && x.size() < y.size());
  11. }
  12. bool SpanEquals(span<uint8_t> x, span<uint8_t> y) noexcept {
  13. auto len = x.size();
  14. if (len != y.size())
  15. return false;
  16. return x.data() == y.data() || len == 0 ||
  17. std::memcmp(x.data(), y.data(), len) == 0;
  18. }
  19. bool SpanLessThan(span<char> x, span<char> y) noexcept {
  20. auto min_size = std::min(x.size(), y.size());
  21. const int r = min_size == 0 ? 0 : memcmp(x.data(), y.data(), min_size);
  22. return (r < 0) || (r == 0 && x.size() < y.size());
  23. }
  24. bool SpanEquals(span<char> x, span<char> y) noexcept {
  25. auto len = x.size();
  26. if (len != y.size())
  27. return false;
  28. return x.data() == y.data() || len == 0 ||
  29. std::memcmp(x.data(), y.data(), len) == 0;
  30. }
  31. } // namespace crdtp